# 变量值互换
# 给定两个变量，交换它们的值。

# 元组赋值 

a = 8
b = '9'
print(a, b)

a, b = b, a
print(a, b)

# 三位交换

a = 8
b = '9'
print(a, b)


c = a
a = b
b = c

print(a, b)

